Malicious PDF — malware analysis report

Static analysis result for SHA-256 7fd09fcd0a3fa207…

MALICIOUS

PDF

94.4 KB Created: 2021-06-27 22:35:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 7345979a9b1e9bf34327c40c46c1576c SHA-1: 9c3890f5721b201d6bb2d4ff6df5cef0ed54683d SHA-256: 7fd09fcd0a3fa207f9eb50471a0e07d30b487d71bd658d625b124bdf7bdcfce6
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. Heuristics identified it as a link farm, with many URLs pointing to compromised WordPress upload directories, suggesting a phishing or malware distribution scheme. The document body was unreadable, but the presence of numerous external links strongly supports the link farm attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://amtusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bccc72cb5a1---19998934572.pdf In PDF document text
    • https://www.sahabatkeluargahomecare.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607853c60e567---36455194058.pdfIn PDF document text
    • http://romanakladatelstvi.cz/userfiles/file/binagivagufefumatubemot.pdfIn PDF document text
    • https://mebelpozakazu.ru/wp-content/plugins/super-forms/uploads/php/files/176975616e8949f19bf37ee7a8b279b5/8558253260.pdfIn PDF document text
    • https://samngaimarble.com/html_upload/file/76693736313.pdfIn PDF document text
    • https://www.sacproblemleri.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b0c3057c548---53052271772.pdfIn PDF document text
    • https://g3az.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070a845b39c3---11547119288.pdfIn PDF document text
    • https://milsagliksen.org/upload/ckfinder/files/10043754216.pdfIn PDF document text
    • http://beastyenergy.com/userfiles/file/20495497798.pdfIn PDF document text
    • https://www.lavishlook.se/wp-content/plugins/super-forms/uploads/php/files/71b05bcab8c41e6f8c9886d2b2180af3/91445438112.pdfIn PDF document text
    • http://biotledlight.com/userfiles/file///wagedunezeguvetem.pdfIn PDF document text
    • https://siphouse96.com/wp-content/plugins/super-forms/uploads/php/files/07bff95c9088a772ac3be188c7e485d6/71843217530.pdfIn PDF document text
    • https://www.alertgy.com/wp-content/plugins/super-forms/uploads/php/files/6a4709691f74c311e8c005210dfcd8b6/85656576711.pdfIn PDF document text
    • https://arizonapoolcontractor.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b3a308f14f9---40994940273.pdfIn PDF document text
    • http://zawayakw.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609bf9c7059d3---83130007736.pdfIn PDF document text
    • https://aldea.work/wp-content/plugins/super-forms/uploads/php/files/33a85b4c91cc23aa5bab0460cba531cc/favenotomoxufugazafeva.pdfIn PDF document text
    • https://robertmatzuzi-massagetherapist.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1606caf3b1d4ee---jukogop.pdfIn PDF document text
    • https://brylka-kfz.de/wp-content/plugins/formcraft/file-upload/server/content/files/160b7511a8b680---gemijoboziludukiremavi.pdfIn PDF document text
    • https://calmoinc.com/upload/editor/file/lozofa.pdfIn PDF document text
    • https://chris-arnold.com/userfiles/file/xabagogipuzagez.pdfIn PDF document text
    • http://gasthaus-steinkirchen.de/img/editor/file/73717955679.pdfIn PDF document text
    • http://rana-international.com/userfiles/files/46304704565.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/A3Ryygt5BCM/uplcv?utm_term=the+hunger+1983PDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000108ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108EA 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000120fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x120FC 20032 bytes
SHA-256: b38ae66931aceadf92f25f1a3fc49285d90edc256640200c74c2c8b715b9c30a
font_02_sfnt_off000153fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x153FA 10364 bytes
SHA-256: ee182e2a45429928540364678caf8a11e670a11c3310526af389d946e58fcc23

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